1.

Retarders are used to ___________

A. Offset the accelerating effect of cold weather on the setting of concrete
B. Offset the accelerating effect of hot weather on the setting of concrete
C. Offset the Retarding effect of cold weather on the setting of concrete
D. Offset the Retarding effect of hot weather on the setting of concrete
Answer» C. Offset the Retarding effect of cold weather on the setting of concrete


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